Oprah is going on the road to campaign for Barack Obama. What does it meeean? Will she make a difference? Do Oprah watchers lean toward Hillary? Will Oprah go negative on her where Obama cannot? Are her ratings better in New Hampshire or Iowa? And most importantly, will she finally manage to shame Tyra "This is just another thing to endorse" Banks into endorsing him? No one knows! But we'll be staying tuned! [Guardian]